CVE-2021-36564
Deserialization of Untrusted Data in topthink/framework
ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component vendor\league\flysystem-cached-adapter\src\Storage\Adapter.php.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Exploit likelihood
What each source reports
NVD Score used
ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component vendor\league\flysystem-cached-adapter\src\Storage\Adapter.php.
- Record
CVE-2021-36564- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Weakness
- CWE-502
- Updated
- 2026-11-02
CVE List No score
ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component vendor\league\flysystem-cached-adapter\src\Storage\Adapter.php.
- Record
CVE-2021-36564- Updated
- 2026-11-02
EUVDEUVD-2021-2429 No score
ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component vendor\league\flysystem-cached-adapter\src\Storage\Adapter.php.
- Record
EUVD-2021-2429- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-33gc-6cw9-w3g4
Deserialization of Untrusted Data in topthink/framework
ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component vendor\league\flysystem-cached-adapter\src\Storage\Adapter.php.
- Record
GHSA-33gc-6cw9-w3g4- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
OSV
ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component vendor\league\flysystem-cached-adapter\src\Storage\Adapter.php.
- Record
CVE-2021-36564- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Updated
- 2026-11-02
OSVGHSA-33gc-6cw9-w3g4
Deserialization of Untrusted Data in topthink/framework
ThinkPHP v6.0.8 was discovered to contain a deserialization vulnerability via the component vendor\league\flysystem-cached-adapter\src\Storage\Adapter.php.
- Record
GHSA-33gc-6cw9-w3g4- CVSS 3.1
- 9.8 Critical
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - Weakness
- CWE-502
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
topthink/frameworkPackagist |
before 6.0.9 | 6.0.9 |
topthink/frameworkPackagist |
before 6.0.9, plus listed versions 5.05.0-rc15.0-rc25.0-rc35.0-rc4 Show 45 moreShow lessv5.0.1v5.0.10v5.0.11v5.0.12v5.0.13v5.0.14v5.0.15v5.0.16v5.0.17v5.0.18v5.0.19v5.0.2v5.0.20v5.0.21v5.0.22v5.0.23v5.0.24v5.0.25v5.0.3v5.0.4v5.0.5v5.0.6v5.0.7v5.0.8v5.0.9v5.1-beta.1v5.1-rc.1v5.1-rc.2v5.1-rc.3v5.1.0v5.1.1v5.1.10v5.1.11v5.1.12v5.1.13v5.1.14v5.1.15v5.1.16v5.1.17v5.1.18v5.1.19v5.1.2v5.1.20v5.1.21v5.1.22 |
6.0.9 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-36564 is a critical vulnerability (CVSS 9.8) in Thinkphp, published December 6, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.92%, the 80th percentile. Fixed in topthink/framework 6.0.9.
References
Left out here: 45 versions. The JSON record has them.